Pilot Investigation of Dual Energy CT Imaging on an Online Adaptive Radiation Therapy System

Inclusion Criteria: * \* Patients with pelvis or genitourinary (GU) cancer requiring standard of care radiotherapy treatment * All adults, defined as individuals of 18 years of age or greater * Radiotherapy treatment will be performed on the Varian Ethos radiotherapy system * Ability to understand and the willingness to sign a written informed consent Exclusion Criteria: * \* Minors, defined as individuals less than 18 years of age * Pregnant or nursing female